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diff --git a/eigen/Eigen/src/plugins/MatrixCwiseUnaryOps.h b/eigen/Eigen/src/plugins/MatrixCwiseUnaryOps.h
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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
+// Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// This file is a base class plugin containing matrix specifics coefficient wise functions.
+
+/** \returns an expression of the coefficient-wise absolute value of \c *this
+  *
+  * Example: \include MatrixBase_cwiseAbs.cpp
+  * Output: \verbinclude MatrixBase_cwiseAbs.out
+  *
+  * \sa cwiseAbs2()
+  */
+EIGEN_STRONG_INLINE const CwiseUnaryOp<internal::scalar_abs_op<Scalar>, const Derived>
+cwiseAbs() const { return derived(); }
+
+/** \returns an expression of the coefficient-wise squared absolute value of \c *this
+  *
+  * Example: \include MatrixBase_cwiseAbs2.cpp
+  * Output: \verbinclude MatrixBase_cwiseAbs2.out
+  *
+  * \sa cwiseAbs()
+  */
+EIGEN_STRONG_INLINE const CwiseUnaryOp<internal::scalar_abs2_op<Scalar>, const Derived>
+cwiseAbs2() const { return derived(); }
+
+/** \returns an expression of the coefficient-wise square root of *this.
+  *
+  * Example: \include MatrixBase_cwiseSqrt.cpp
+  * Output: \verbinclude MatrixBase_cwiseSqrt.out
+  *
+  * \sa cwisePow(), cwiseSquare()
+  */
+inline const CwiseUnaryOp<internal::scalar_sqrt_op<Scalar>, const Derived>
+cwiseSqrt() const { return derived(); }
+
+/** \returns an expression of the coefficient-wise inverse of *this.
+  *
+  * Example: \include MatrixBase_cwiseInverse.cpp
+  * Output: \verbinclude MatrixBase_cwiseInverse.out
+  *
+  * \sa cwiseProduct()
+  */
+inline const CwiseUnaryOp<internal::scalar_inverse_op<Scalar>, const Derived>
+cwiseInverse() const { return derived(); }
+